Liquid-dispenser.



I. G. IVIcI-NERY.

LIQUID DISPENSER. APPLICATION FILED M'AY 23. |911.

1,274,915. PatenIedAug. 6,1918.

To all whom t may. concern:

- 'lm imfe. munir-nav, or carence, ILLINoIs.

' LIeUIn-nrsrnnsna.

Be it known that I, JEREMIAH. G. MQEN- Enr, a citizen of the UnitedStates, and a resident of Chicago, in the countyv of .Cook and State ofIllinois, have invented certain new'and useful Improvements in. Liquid-Dispensers, of which the following is a specification. l

My invention relates toan improved dis-,I penser for liquids s uch asliquid soap.

My improved d1spensei belongs to that classin which a spout lunger cXtends downwardly from the liquid reservoir and is provided withladispensing passageway normally closed to the container contents Abutbeing. brought into position to receive and dispense the contents whenthe plunger spout is forced upwardly. O ne of the important features ofmy 'invention is the provision of a plunger chamber-which communicateswith the liquidreservoir through a passageway which` is of such capacityrelative to that of the plungerpassageway that onlyI part of the chamberwill contain liquid, air filling the remaining sp-ace to be com.-`pressed when-the plunger is raised and to force liquid from the chamberinto and.

through the plunger passageway, part of the air being also 4forcedupwardly into the reser- Y voir. hen' when the plunger is suddenlyreturned as by a spring, the suction effect produced in the plungerchamber will cause air to be drawn upwardly through the pl er passagewayand a fresh charge of liquliid drawn into the plunger chamber. Anotherfeature of the invention -resides 1n means for adjusting, relative to.the plunger passageway, the capacity of the passageway which connectsthe reservoir with 'the plunger chamber.

The above and other features of my invention are embodied in thestructure shown on the accompanying drawings.V In these. drawings- Fi re1 is a vertical diametral view of' the dispenser and a supportingbracket therefor, and

Fig. 2 is a plan view of the dispensing fittin phe cylindrical cu 5 hasinterior threads for receiving the out et neck 6 of the reserl voir 7,and depending from the cup is the lug 8 having exterior threads forengaging in the threaded circular end 9 ofthe supporting bracket 10. Thelug has the axial guide passageway 11 for the plunger spout y spe-mationof Letters-Patent. spammen mea may 2s, 1917. serial No. 170,379.

patented Aug. crisis..

12, which a distance downwardly from itsupper c nd has the annularabutment and supporting flange 13 whose under surface is way 11. A'dispensing passageway or duct spout from the side inlet opening 16 tothe preferably conical to lit the conical seat 14.- 60 v surrounding theupper end of the passagelower end of the plunger, the top of the iiio5let lbeing just below the iange 13 4to be closed when the plunger isdown and to be open to the .space above the seat 1,4 when the plunger israised.

Within the cup 5is the cylindrical frame 70 or shell 17 vclosed at itsupper end by the top 18 and open at its lower end, the outer diameter ofthe shell being such that it will Vreadily pass through theneck 6 of thereservoir, and the inner diameter being such that the shell at its lowerend will surround the annular boss 19 surrounding the seat 14 for theplunger. At its lower edge the frame 17 has the lateral annular flange20 which seats on the bottom of the cup 5 within the raised 80 annularseat 21 at the lower corner of the cup 5. Engaging thetop of the fiange2O and seat'21 1s a washer 22 of rubber or other material which, whenthe reservoir 7 is screwed into the cup,is compressed -to'seal 85 thechamber c in the frame 17 from the cup 5 and the reservoir, the onlycommunication between the reservoir and the chamber c being through thepassageway 23 in the top 18 of the frame. At its inner side the top 9018 has the annular pocket 24 for seating the upper end of a compressionspring 25 which` lat its lower end surrounds the top of the plunger 12and seats against the ange-l.

In accordancewith my invention the capacity of the passagewayV 23 has afixed relation to the capacity of the plunger passageway' 15, thepassageway 23 being prefer-- ably smaller, and means are preferablyprovided for adjusting the size of the passageway 23. As shown in Fig.2, this passageway may be in the form of a slot over which a plate 26 ispivoted to be shifted to adjust the available passageway through theslot between the reservoir and the chamber c.

The operation is now apparent. When the device is empty the reservoirand the chamber will be lled with air, and when li uid is charged intothe reservoir some will ow through the passageway 28 into chamber c, 110

butthis chamber will not be filled as `on account of the small capacityof the passage. r

v 23v air :will be entrapped ,inthe chamber. f v,Then when the lungerspout is ushed upwardly andfthe vvo urne-of the cham erre- A duced, theairfabove the 'liquid in the chamber will be compressed and will forcethe vliquid `into and'throughthe passageway- 15 tobedischaredl vSome of`the air is also i `frorcedfu'pwar ly through' the passageway 23 intothe reservoir. When the plunger spout .is released the spring, willthrow` it backv )to its lower position." During such return air anmovement of the plunger the volume of the l chamber 0 is increased andsuction effect .is produced'thereim'and this will cause air to .be drawninto the chamber. through the plunger passageway 15,-and will alsocause,

liquid to be drawn into the chamber from 'the reservoir through thepassageway 23. The roportion .of air and liquid in the chamiier 0 aftera dispensing operation dependsupon the frelative ca a'cities of the Dsageway 23 relative to that ofthe spout passageway can -be adjusted, andfor each adi justment there will be only a redetermined quantity ofliquid inthe cham er o .available to'be dispensed when the plunger israised anddepending upon .the degree of raising'of the plunger aproportionate amount of this Aliquid in chamber c will be dispensed. YAn

important and very desirable result of the above construction andoperation is that during each up-stroke of the plunger the passageway 23v'will be cleaned by the air turn movement of the plunger its passageway15 is thorou hly cleanedv ,by vthe air sucked upwardly t erethrough.After each dispensin operation the plunger duct 15 is entirely c ear ofliquid and dripping andv clogging is entirely eliminated.

To prevent closure, of. -the lowerl end of passageway 15 when theplunger is raised by the hand, side outlets 27 and 28 may be providedwith their outlet ends sufliciently elevated to prevent closure by thehand.

In the bottom of cup 5 annular'clearance pockets 29 may be provided forreceiving solid particles in the liquid which might otherwise preventaccurate seating and sealingofthe frame v17.

he liquid receptacle -7 is preferably of glass and may be permanentlyclosed at the top and filled by removing it from the cup 5. However, Iprefer to provide the inlet neck 30 at the top to beclosed by a cap 31provided with a disk or washer 32. I do not desire to be limited to theexact construction, arrangement and operation 'nem-,915', f. v

shown and described as modifications are noA doubt possible whichwould'still come with# in the scope of the invention. lI claim as'follows: .Y .v 1. In a liquid dispenser, 'the combination of a liquidreservoir having an opening in its lower end, a supporting base lforsupporting said reservoir, s aid base'having a guidey passageway, adispensing plunger 'v sli'dable .vertically insaid passageway, adispensingduct through said plunger closed-by tending to hold saidplunger down, said plunger passagewayl being brought into' communicationwith said chamber when the said base when said plunger is down, laca'sl' plunger is. raised, said orifice being suiiciently smalltopreventfilling.' of said chamber with liquid when the plunger is downwhereby the air in said chamber above the liquid therein willl becompressed during upward movement of theplunger to force the liquid insaid chamber downwardly through the plunger passageway. 2.v Inadispensing device of the class described, .the combination of asupporting base, a. guide passageway therethrough, a

dispensing plunger shifting vertically in same when it is down, adispensing passagedown, aV receptacle mounted on said basel and havingan opening surrounding said [p plunger, a casing secured on said baseabove forced therethrough, and during each rethe plunger and plungerpassageway y,and

forming a chamber,the top of said'casing having a restricted passagewayfor connecting said chamberwith the .reservoir and for lpreventingescape of `all the air in said chamber y'when the reservoir is filled, a

. spring tending to hold the plunger down,

upward movement of the plunger bringing its dispensing passageway intocommunication with said chamber and causing compression of the airinysaid chamber'to force to its in `said chamber Yto draw '-ai'r thereintothrough4 the dispensing vpassageway and` .liquid thereinto through saidrestricted ori- 3. In a dispensing device of the class vdescribed, theAcombination of a vsupporting base, a vertical guide passagewaytherethrough, a plunger filling said passageway but slidable therein,said plunger having a dispensing duct therethrough closed at its upperend by said base when the plunger is vsaid passageway and adapted' toclose the ist down, a liquid reservoir mounted on said base andsurrounding the upper end of the plunger, a casing mounted on said baseover the plunger end'and extending into said reservoir opening, saidcasing forming a chamber into which the plunger may pass when shiftedupwardly,a spring resisting upward movement of the plunger; and acommunicating passageway for connecting the top of said chamber withsaid reservoir, said communicating passageway bein restricted topreventcomplete fllin o said chamber with liquid whereby W' en said Yplungeris'raised Vthe air entrapped in saidchamber will be compressed andliquid discharged from said chamber into and through said dispensingduct.

4. In a dispensing device of the class described, the combination of asupporting base, a vertical guide passageway therethrough, a plungerfilling said passageway but slidable therein, said plunger having adispensin duct therethrough closed at its upper en by said base when theplunger is down, a liquid reservoir mounted on said base and surroundingthe upper end of the plunger, a casing mounted on said base over the`plungerend and extending into said reservoir opening, said casingforming a chamber into which the plunger may pass when shifted upwardly,a spring resisting upward movementof the plunger, said dispensin ductbeing brought into communica= tion with said chamber when the plunger israised, a communicating passageway for, connecting the upper end of saidchamber with v said reservoir, said communicating passageway beingsufiiciently restricted to cause the entrapping of air in said chamber,

liquid are drawn into said chamber through the dispensing duct andcommunicating passageway respectively.

In a liquid dispensing device of the class described, the combination ofa supporting base Yhaving a verticalfguide passageway therethrough, adispensing plunger filling said passageway but slidable therein, saidplunger havin a dispensing duct closed at its upper end y said base whensaid plunger is down, a hquid reservoir mounted on said base and havingan opening, a casing on said base over the top of the plunger andextending into said reservoir opening, said frame forming a chamber intowhich the plunger may be raised to bringthe dispensing duct intocommunication wlth the chamber, and a communicating passagewayconnecting the top of said chamber with the reservoir, saidcommunicating passageway being of such capacity relative to that of thedispensing duct that when said plunger is raised and lts passagewayconnected with said chamber part of the contents of said chamber willHow through the dispensing duct and part through said communicatingpassageway.

In witness whereof I have hereunto subscribed my name this 21st day ofMay, A. D.

J EREMIAH G. MGENERY.

